So from what I have gathered after doing some tests is that they use IP's to target your accounts, started using my phone for internet to bot and the ip changes nearly every day and whenever I turn data off and on. Doing this I only lost a low level 3 year old account in the 30's and did not lose my other mm's and main account like last time. Authenticator does not protect new or old accounts from deletion - so no point using it

These are my experiences though so who knows.